At a concert in Lisbon, Portugal, Lovato seemed to fight back tears as she sang lyrics about apologizing to her parents and fans about not being sober anymore. She tweeted a short video of the performance with a message filled with gratitude and hope.

“Today I took the stage, a new person with a new life,” she wrote. “Thank you to everyone who has supported me throughout this journey. It will never be forgotten.”

Lovato hasdiscussed her personal journeyswith addiction and sobriety candidly in the past. She said an experience at the 2016 Met Gala nearly drove her to drink, which prompted her toleave the event early and attend an Alcoholics Anonymous meeting that same night.